package com.gyz.cfmall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.gyz.cfmall.product.dao.SkuInfoDao;
import com.gyz.cfmall.product.entity.SkuImagesEntity;
import com.gyz.cfmall.product.entity.SkuInfoEntity;
import com.gyz.cfmall.product.entity.SpuInfoDescEntity;
import com.gyz.cfmall.product.service.*;
import com.gyz.cfmall.product.vo.SkuItemSaleAttrVo;
import com.gyz.cfmall.product.vo.SkuItemVo;
import com.gyz.cfmall.product.vo.SpuItemAttrGroupVo;
import com.gyz.common.utils.PageUtils;
import com.gyz.common.utils.Query;
import org.apache.commons.lang.StringUtils;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ThreadPoolExecutor;


@Service("skuInfoService")
public class SkuInfoServiceImpl extends ServiceImpl<SkuInfoDao, SkuInfoEntity> implements SkuInfoService {

    @Resource
    private SkuImagesService imagesService;
    @Resource
    private SpuInfoDescService descService;
    @Resource
    private AttrGroupService attrGroupService;
    @Resource
    private SkuSaleAttrValueService skuSaleAttrValueService;
    @Resource
    private ThreadPoolExecutor executor;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                new QueryWrapper<SkuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public void saveSkuInfo(SkuInfoEntity skuInfoEntity) {
        this.baseMapper.insert(skuInfoEntity);
    }

    /**
     * sku检索
     *
     * @param params
     * @return
     */
    @Override
    public PageUtils queryPageCondition(Map<String, Object> params) {

        QueryWrapper<SkuInfoEntity> queryWrapper = new QueryWrapper<>();

        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key) && !"0".equalsIgnoreCase(key)) {
            queryWrapper.and((wrapper) -> {
                wrapper.eq("sku_id", key).or().like("sku_name", key);
            });
        }

        String catelogId = (String) params.get("catelogId");
        if (!StringUtils.isEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)) {
            queryWrapper.eq("catalog_id", catelogId);
        }

        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId) && !"0".equalsIgnoreCase(brandId)) {
            queryWrapper.eq("brand_id", brandId);
        }

        //queryWrapper.ge("price", min);  ge: >=
        String min = (String) params.get("min");
        if (!StringUtils.isEmpty(min)) {
            queryWrapper.ge("price", min);
        }

        String max = (String) params.get("max");
        // le: <=
        if (!StringUtils.isEmpty(max)) {
            try {
                BigDecimal bigDecimal = new BigDecimal(max);
                if (bigDecimal.compareTo(BigDecimal.ZERO) == 1) {
                    queryWrapper.le("price", max);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        // key:
        // catelogId: 225
        // brandId: 9
        // min: 0
        // max: 0

        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                queryWrapper
        );

        return new PageUtils(page);
    }

    @Override
    public List<SkuInfoEntity> getSkusBySpuId(Long spuId) {

        List<SkuInfoEntity> skuInfoEntities = this.list(new QueryWrapper<SkuInfoEntity>().eq("spu_id", spuId));
        return skuInfoEntities;
    }

    @Override
    public SkuItemVo item(Long skuId) throws ExecutionException, InterruptedException {
        SkuItemVo skuItemVo = new SkuItemVo();

        CompletableFuture<SkuInfoEntity> infoFuture = CompletableFuture.supplyAsync(() -> {
            //1、获取sku的基本信息，数据来自于pms_sku_info表
            SkuInfoEntity skuInfoEntity = this.baseMapper.selectOne(new QueryWrapper<SkuInfoEntity>().eq("sku_id", skuId));
            skuItemVo.setSkuInfo(skuInfoEntity);
            return skuInfoEntity;
        }, executor);

        CompletableFuture<Void> descFuture = infoFuture.thenAcceptAsync((res) -> {
            //3、spu的介绍，数据来源于pms_spu_info_desc表
            Long spuId = res.getSpuId();
            SpuInfoDescEntity descEntity = descService.getById(spuId);
            skuItemVo.setDesc(descEntity);
        }, executor);

        CompletableFuture<Void> groupAttrFuture = infoFuture.thenAcceptAsync((res) -> {
            //4、spu的规格参数
            Long catalogId = res.getCatalogId();
            List<SpuItemAttrGroupVo> attrGroupVos = attrGroupService.getAttrGroupWithAttrsBySpuIdAndCatalogId(res.getSpuId(), catalogId);
            skuItemVo.setGroupAttrs(attrGroupVos);
        }, executor);


        CompletableFuture<Void> saleFuture = infoFuture.thenAcceptAsync((res) -> {
            //5、获取spu的销售属性组合
            List<SkuItemSaleAttrVo> saleAttrVos = skuSaleAttrValueService.getSaleAttrBySpuId(res.getSpuId());
            skuItemVo.setSaleAttr(saleAttrVos);
        }, executor);

        CompletableFuture<Void> imgFuture = CompletableFuture.runAsync(() -> {
            //2、sku的图片信息，数据来自于 pms_sku_images表
            List<SkuImagesEntity> imagesList = imagesService.list(new QueryWrapper<SkuImagesEntity>().eq("sku_id", skuId));
            skuItemVo.setImages(imagesList);
        }, executor);

        // 等待所有任务完成返回结果
        CompletableFuture.allOf(descFuture, groupAttrFuture, saleFuture, imgFuture).get();
        return skuItemVo;
    }

}